On 12/7/2007 3:54 PM, Horace Heffner wrote: > > On Jul 12, 2007, at 1:40 PM, Harry Veeder wrote: > > >> >> I see gravity as providing the asymmetry...but I am not exactly >> sure how. >> Thanks for the links. I quickly scanned the pages but the systems >> shown do >> not appear to depend on gravity in any essential way. >> >> Harry > > > Nothing you have shown depends on gravity in any way. If built > symmetrically as shown, i.e. well balanced, it will no more have a > preferential position than a propellor or fan (that is to say no > preference at all). > > > Horace Heffner > http://www.mtaonline.net/~hheffner/ >
yes, I know. thanks for pointing that out. Harry
